Computers Are Thick

And computers can't cope with:

• Ink other than black or blue (do you think a very pale blue counts?)
• Lower-case letters
• Answers that go outside the box
• Ticks that are the wrong way round
• Crossing-out and writing above the line
• Ticking all the boxes when told to "tick all that apply"
• Ticking several boxes when told to "tick one box only"
• Coffee stains
• Rips and tears
• Muddy pawmarks
• Religions with more than 17 characters in their description
• Responders who ignore navigation instructions (like answering questions 27 to 31 when told to go straight to question 32).

There's all sorts of ways this could go wrong.